Sampling and keys

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Match the correct letter with the correct label in the table.

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Match the text

A

B

C

D

E

F

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Casting a shadow over the light sensor.

Insert PROBE to same depth each time.

Wipe the PROBE between each reading to ensure that moisture from a previous reading does not affect the results.

Not wiping the PROBE between each reading so moisture is still on it.

Light intensity meter

On cloudy days take several readings at each site and calculate average.


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